The article presents a study on the effect of ultrasonic reduction slurry flotation sylvinite concentrator to further process sylvinite ore concentration. Combined use of the purification process (ultrasonic processing, followed by gravitational desliming ore) in step slurry flotation increases cleaning efficiency minerals from insoluble impurities and reduces the loss of potassium chloride with slurry has been shown. Increased extraction of insoluble residue in the sink hydrocyclone at the combined way desliming without additional consumption of reagents will lead to lower rates of reagents on mechanical desliming, reducing the front sludge flotation and increase the productivity of the equipment in the sylvinite ore concentration technology of flotation process.

Keywords: ultrasonic treatment, slurry flotation, sylvinite ore concentration, potassium chloride

Operation of sylvinite ore desliming is an important step of potassium chloride production by floatation method. It is known that ultrasonic treatment is applied to increase the efficiency of insoluble rest separating from an ore. The purpose was to establish kinetic regularities of the insoluble rest removal from sylvinite ore crystals of the same particle size distribution. Investigations were carried out with mechanical stirring and sonication of varying intensity. It is established that process of sylvinite ore desliming occurs in the diffusion mode. Application of ultrasonic treatment allows to intensify process in 2-4 times as compared with mechanical desliming. Influence of sylvinite ore treatment parameters to chemical composition changing of the insoluble rest is defined. It is shown that sonication for 90 seconds leads to removing carbonates from ore crystals withal concentrating of the iron compounds.

Keywords: desliming, sylvinite ore, ultrasonic treatment, sonication, insoluble rest.

The process of sylvinite ores desliming with ultrasonic treatment is considered. The influence of frequency, intensity and duration of impact to the insoluble rest removal efficiency of sylvinite ores crystals is defined. The optimum mode of sylvinite ores desliming with ultrasonic treatment is established.

Keywords: desliming, desliming degree, sylvinite ore, ultrasonic treatment, insoluble rest